Nonparametric estimator for the survival function of quality adjusted lifetime (QAL) in a three-state illness–death model

Biswabrata and Dewanji have a new paper in the Journal of the Korean Statistical Society. This considers estimation of quality adjusted lifetime (QAL) in illness-death models under right censoring. In contrast to their previous work, estimation is non-parametric rather than parametric. A semi-Markov assumption, where sojourn times in each state are assumed independent, is taken.